Word Type

Adjective

Adjective

Noun

The word "substantial" can be used as adjective, adjective and noun.

Word Relationships

Opposites (Antonyms)

insubstantial

Derived Terms

consubstantial insubstantial substantiality substantially substantialness

Narrower Terms (Hyponyms)

enduring firm personal rigid solid stout strong

Related Terms

substance

Related Terms

actual ample corporeal essential estate exist filling firm goods imaginary important large material nourishing possess satisfying significant solid strong substance veritable wealthy

Similar Terms

considerable essential essential material rich sound sound wholesome

Synonym Network

satisfying significant wealthy

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.